Nut-lock.



No. 738,060. PATENTED SEPT. 1, 1903.

- F. PARSONS.

NUT LOCK.

APPLICATION FILED DEC. 4, 1902.

N0 MODEL.

FIG. 1.

FIG. 2. I 2

7i 1 ldmw member.

:Patented September 1, 19OS.

PATENT OFFICE.

FRANK PARSONS, OF HOLDREGE, NEBRASKA.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 738,060, dated September 1, 1903.

Application filed December 4. 1902. Serial No. 133,826. (No model.)

To all whom, it may concern.-

Be it known that I, FRANK PARSONS, a citizen of the United States, residing at l'loldrege, in the countyof Phelps and State of Nebraska, have invented certain new and useful linprovements in Hut-Locks, of which the following is a specification.

My invention relates to certain new and useful improvements in nut-locks for vehicleaxles. p

In vehicle-axles it has been found that the mere threading of the axle end in the opposite direction from that in which the tendency of the nut is to turn by its frictional engagement with the wheel-hub is not sufficient to prevent the nut from working off, so means have been devised for locking the nut upon the axle; and my inven ticn relates to improvements in these locks.

It will be observed that my improvements are not only applicable to vehicle-axles, but wherever a nut is to be locked.

To these ends my invention consists in the construction, combination, and arrangement of parts to be hereinafter fully described.

In the accompanying drawings, forming a part of this specification, reference will be had to the several views, in which like numerals of referencedenote corresponding partsthroughout the several views, in which Figure 1 is an elevation of my improve ments. Fig. 2 is a similar view showing the nut partly in section and in a locked position. Fig. is a similar view showing the nut out of locked engagement. Fig. etis an end view of the axle in elevation. Figs. 5 and 6 are like views of parts of my improved locking Fig. 7 is a side elevation of the locking member partly in section.

1 represents an axle orother article to which the nut is to be locked by the locking member The end of the bolt is provided with radial notches l, lugs 5, and the central cutaway portion 6. Thelocking member 3 is provided with a head 7, the shank 8 thereof being square in cross-section and having the reduced portions 9 and 10. Upon the reduced portion 10, which is substantially square in cross-section, is secured, by means of the screw 11 and washer 12, a disk 13, upon which is formed integral projections 14, adapted to seat in grooves and engage the lugs 5 of the axle, the cut-away portion 6 receiving the head of the screw 11. The nut 2 is provided in its end with a square aperture 15 to receive the square shank of the locking member, upon which is coiled a spring 16, one end of which engages the inner face of the disk 13 and the other the inner face of the nut.

The operation of my device is as follows: Assume that the nut is looked as seen in Fig. 2 and it is desired to unlock the same. The projections 14: are removed from engagement with the lugs 5 by the withdrawal of the said member 3, which is accomplished through the medium of the head 7. The locking member being withdrawn and being consequently under the tension of the coil-spring 16, which is thereby retracted, it is brought to an inoperated position by its being turned in any suitable manner, so that the corners 17 of the square shank S are thrown out of register with the square aperature in the end of the nut, as seen in Fig. 3, when the nut may be easily removed from the axle.

lVhen it is desired to lock the bolt, the shank 8 is turned to register with the square aperture in the nut, at which time the spring in expanding will force the projections 14 again into engagement with the lugs 5 and the head 7 against the outer face of the nut, as seen in Fig. 2.

Having fully described my invention, what I claim to be new and useful, and desire to obtain by Letters Patent, is

1. The combination with the axle formed with a notched end, of a nut provided in its end with a square opening, a locking me1n= ber having the greater portion of its shank square in cross-section, and the remaining portion reduced in thickness whereby when the side member is drawn outward and given a partial turn the inner end of the square portion thereof will engage the outer face of saidnut, a disk secured to the inner end of said member, said disk being formed with projections to engage the notches of said axle, and aspring interposed between said disk and end of the nut.

2. The combination with the axle having its end formed with notches, of a nut formed with an opening in its end, a locking member operating through the opening of said nut, looking member, and a spring interposed besaid loekingmember comprisingabo1t,formed tween said disk and interior of the nut. 10 on its outer end with a head, and having its In testimony whereof I aflix my signature inner portion reduced in thickness thereby in presence of two Witnesses.

5 forming a shoulder adapted to engage the eX- FRANK PARSONS.

terior of the nut when the bolt is drawn out- Vitnesses: V ward and given a partial turn, atoothed disk R. D. FULLER,

removably secured to the inner end of said XV. H. COWGILL. 

